Glass severing apparatus



July 21, 1942. w. P. STUCKERT 2,290,837

GLASS SEVERING APPARATUS Filed Oct. 26, 1940 6 Sheets-Sheet l ,1942. w. P. STUCKERT 2,290,837

- GLASS SEVERING APPARATUS Filed Oct. 26, 1940' 'GShee'fls-Sheet? K} v m 'INVENTOR' BY I A-rromvsx July 21,- 1942. w. P. BTUCKERT 2,299,337

- GLASS SEVERING APPARATUS I Filed Oct. 26, 1940 6 Sheets-Sheet z I w" Nv y I INVENTOR.

r? ,s'wez-t BY g n v J ATTOKNEY JulyZL I I w. P. s' ER-r 2,290,837

GLASS SEVERING APPARATUS Filed D012. 26, 1940 6 Sheets-Sheet 4 BY v v ATToz/vE Y July 21, 1942. w. P. STUCK ERT 2,290,837

' GLASS SEVERiNG APPARATUS 6 Sheets-Sheet 5 Filed octQzs, 1940 July 21, 1942. w. P. STUCKERT GLASS SEVERING APPARATUS 6 Sheds-Sheet Filed Oct. 26,- 1940 INVENTOR.

BY x I I 41' roe/vex Patented July 21, 1942 UNITED STATE 5, PATENT OFFICE GLASS SIEVERING APPARATUS William P. Stuckert. Marblehead, Mass, assignor 'to Hygrade Sylvania C orporation, Salem, Mass;

a corporation of Massachusetts i Application October 26; 1940, Serial No. 363,028

6 Claims. (01. 49-48) i chines of, the Banner type draw standard 48 This invention relates to the means of drawing molten material in cylindrical form and more particularly to into desired lengths, y

An object of this invention is to provide a means for cutting glass tubing that will give a.

more positive and a cleaner'cut of the tubing when it is being cut into the desired lengths,

Another object of this invention is to provide a means for cutting glass tubing that will enable.

the cutting mechanism to accomplish the combination of a vertical and horizontal movement when it is cutting the tubing. y

A further object is to providea glass tubing machin that may readilybe adapted to draw tubing of various lengths.

. .Further objects, advantages, and features will be apparent from the'specifications below taken in conjunction'with the accompanying drawings in which: o

Figure 1 is a top view of the apparatus according to my invention.

Figure 2 is a front elevational view of this apparatus.

Figure 3 is an end elevational view of this apparatus.

Fig. 4 is a assembly.

Figure 5 is a detail of detail of the cutter and cutter cam the horizontal cam assembly in its normal rearward. position before cutting.

Figur 6 is a detail of the horizontal cam assembly in its normal forward position.

Figure 7 is a detail of the horizontal cam assembly in its normal rearward positionafter cutting. o

,Figure 8 is a detail ofthe horizontal cam assembly in its locked position.

Figure 9 is a schematic plan view partly in section showing the locking control in its locked position and having its normal unlocked operin phantom.

ating position shown elevational view shown in Figure 10 is a side section of the gear change transmission,

Figure 11 is a side elevational view shown in section of an altern'ategear change cover.

Figure 12 is a side elevational view shown in section of another alternate gear change. cover.

Similar reference characters refer to similar parts throughout the several views of the drawings.

This invention embodies certain improvements over the so'cal1ed'Danner machine described in the Patent 1,220,201 issued to Edward'Da'nner on March 27, 1917.- Most glass tube drawing mathe means of cutting glass tubing provide the inch lengths, When more than one length of tubing was desired, a separate machine was usually set up for each desired length or the one being used' was reconstructed considerably to new desired length. The cost and inconvenience of this is.prohibitive-,to one'who wishes toobtain substantially small quantities 'of tubing of several diiierentelengths and diameters. U

By employing the adjustable screw arrangement in this invention, a cut of any desired length may be obtained by sliding the adjustable housing.

Formerly the cutting of the tubing was done by a horizontal motion of the cutter. In this invention, by employing a series of cams, the cutting mechanism accomplishes a combination horizontal and. vertical movement, thus causing the cutting head to functionv in an armate 'manner. Cutting the tubing in this manner provides aclean and therefore more economical cut for it eliminates much of the breakage due to strains near the cutting point.

In Figure 1, the tubing I is out by thecutting wheel 2. The cutter wheel 2 is driven by the cut-' ter motor 3 supported from the motor cutter carriagefi. The carriage 5 moves from its position shown in Figure. I along th ways 10 and the splined shaft 1 and returns to this position during each revolution oi the splined shaft and during each cut of the cutter}, This splined shaft 1 is driven by the gears in the gear change box 6. The shaft 1 i connected to the gear box 6 and the gear take-off drive 23 through th flexible couplings 8. 'The ways In along which the carriage 5 moves are mounted one directly above the otheron the way pedestals l I. I

They carriage 5 is actuated by the roller carrying chain' l3 through a roller housed in the chain roller carrier 12. This chain I3 is driven by the drive shaft projecting from the fixed drive housing 16. The idler sprocket l5 projects from the adjustable housing 11. The fixed drive housing I6 is mounted in a fixed manner at one end of the I bar slides l9. These bar slides are bolted in the pedestal 2| which is fixed to the base plate 9, The adjustable drive housing I! is loosely mount- I ed on theother end of the bar slides Win a manner as to permit the housing to be moved forward and backward along the'length or the bar slides 19. This endof the bar slides l9 is'fixed to the'pedestal 2D. -The key way 24* provides a guide in accurately. mounting the assembly on the base plate 9.

22 through the drive sprocket I4 When tubing of a length difi'erent than that being drawn on is desired, it may be obtained by certain adjustments which comprise a part of this invention. For example, if tubing longer than that being presently drawn oiT is desired, the adjusting screw 18 is adjusted to create a sufficient slack in the chain l3 to remove it from the sprockets I4 and IS. The adjusting screw I8 is then adjusted to move the adjustable hous-' ing i1 downward along the desired position. When this position is reached, a chain of a length adequate to provide a workingchain tension is set on the sprockets H and I to replace the smaller chain 13.

There is one other made. Since the splined shaft 1 is geared to turn one revolution per cut, length of the chain 'will result in an increase in ing an arcuate cut. If tubing of different diameters is run on, two adjustments should be made, one through the horizontal adjusting control 26 and the other through the vertical adjusting control 21. The horizontal control is locked by the horizontal locking control and the vertical control is locked by the vertical locking control 5|.

Figure 2, a front view of the glass cutting ape paratus, shows the cutting means more clearly in its relation to the rest of the machine. mentioned above, there is a vertical as well as horizontal motion to the cutting wheel as it moves along with the tubing so that the result- The horizontal motion is contour of regulated by The vertical motion is obtained through the contour of the cam 29 and its cam roller 30 and is controlled and regulated by the vertical adjusting control21. The necessity for two different by the cutter in the act of cutting the tubing must be changed so that it will continue to I01- low the circumferential contour of the tubing.

Since this arcuate motion is obtained through the cams 28 and 29 by reason adjustment that must be of their contour,

and down on the bar 3p follows the contour'of the cam 29.

2,290,837 I I a v cams 28 and 29 are taken out and replaced by cams of the desired contour.

The motor cutter carriage 4 on which the cutter motor 3 is mounted moves in an arcuate manner to permit the cutter wheel 2 to accomplish a combination horizontal and vertical cut of the tubing. The vertical motion is accom-' plished by the cutter carriage guide 32 sliding up slides 3l'as the cam roller vertical motion is accomplished will appear more are mounted on the base plate clearly in Figure 4.

The vertical locking control 5| attached to the carriage 5 slides 3|,

when it is desired to adjust or shows the relative component parts. .The fixed way pedestal II and the gear pedestal 20, the take-off drive 23 9. The bar slides of the pedestal 20 and serve to guide the adjustable housing I! as it is adjusted through the adjustable screw 18. The chain roller carrier I2 attached to the carriage This figur tour such as to give the tron and cam 29 having a contour such as to the cutter wheel, it is apparent that if larger tubing is to bedrawn, the circumference of that tubingwill be larger and hence a longer are will have tobe described. This is accomplished through two'adjustments. The vertical adjustin'the position which it assumes when the ing screw 46 may be adjusted through the vertical motion adjusting control 21 and the horizontal adjusting screw 39 may .be adjusted through the horizontal motion adjusting control 26. Since the splined shaft 1 is geared to turn one revolution per cut of tubing, we may dishorizontallocking slot guide 43 ,with the locking slot 42' thereinlocks itself about the locking pin 41. The locking slot 42 is so located at' a point along the horizontal locking slot guide "43 that the act of locking must take place when the oscillating link. 36', has pushed the horizontal adjusting screw 39, the saddle link 44 on-which the'locking pin 41 is mounted, and the motor cover the manner in which the arcuate motion of the cutter is accomplished by studying the results which take place when the cams move through 360 degrees. is transmitted into the vertical motion of the cutter carriage guide32 through the cam roller 30. The vertical motion cam. 29 is synchronized with the horizontal motion cam 28 so-that as the cutter carriage guide 32 moves upward as a result of the motion transmitted through the The motion of the cam 29' vertical cam roller 30, the cutter carriage 4 will move forward simultaneously as a resultof the motion transmitted through the horizontal cam roller 34 and linkage to give a forward motion to the motor cutter carriage slide bars 45. The cutter carriage guide 32 is bushed to accommodate the motor cutter carriage slide bars 45. Thus the desired arc is described when the cutter carriage guide 32 moves upward and the slide bars 45 therethrough move forward.

The motion of the horizontal cam roller 34 is transmitted to the oscillating link 36 through the horizontal cam follower -31 and the spring 35 around their common pivot 50. The oscillating link spring 38 attached to the housing on one end and the oscillating link on the other serves as a means of insuring a firm spring contact between the cam roller 34 and the cam 28. As the cam moves through its cycle, the motion transmitted to the oscillating link 36 is in turn transmitted through the horizontal adjusting screw 39 and the saddle link 44 to push forward the motor cutter carriage slide bars 45attached to the other end of motor cutter carriage 4, the cutter motor 3 and the cutting wheel 2. The front universal joint assembly'4l and the rear universal joint assembly 40 enables adjustments to be made while the machine is in actual operation. These universal joints .connect the horizontal adjusting screw 39 to the horizontal adjusting control 26.

Figures 5, 6 and 7 show in detail just how the horizontal motion is accomplished. Figure 5 shows the relative location of the horizontal motion mechanism when the cutter wheel is in its rearward position. As the cam 28 turns in a clock-wise manner, the cam roller 34, following the contour of the cam, will move forward as shown in Figure 6. This forward motion of the cam roller 34 will be transmitted into the rearward motion of the cam follower 31. This rearward motion will be transmitted into the forward motion of the oscillating link 36 through the spring 35. As the oscillating link 36 moves forward it will push forward the horizontal adjusting screw 39, the saddle link-44 and the motor cutter carriage slide bars 45, all of which are attached one tothe other. After this forward motion has been completed and the desired horizontal motion attained, the horizontal motion mechanism, due to the contour of the cam which are the 1 gear change box covers.

which actuates it, will move in a rearward di- 76 from the path of the tubing being drawn this position that the. locking. pin 41 will be far enough forward to" become locked in the locking slot 42 in the horizontal locking slot guide 43. The vertical locking control 5| has been described and the manner in whichit functions illustrated in the-description of Figure 2 above. These two locking controls cooperate to enable the removal of. the glass severing-means ofi.

Figure 8 shows theposition which-thehorizontal motion cam assembly assumes when it has been looked through the pin 41.; It will be locked in the rearward position and the motion transmitted from the cam 29 through the cam roller 34 to the camfollower 31 .willresult in the expansion and contraction of the safety spring 35.

Figure 10 shows the gear change box 6 which drives the splined shaft. The gears in this box are driven from the beveled gear .pinion crossdrive 53 through the beveled gear '51 and its power input. shaft 6|. The jack shaft 55 is driven through the low ratio pinion 63 which is geared to the fixed master driving gear 62 on the end of the beveledgear power input shaft 6|. The'low ratio jack shaft pinion 66 is geared to its appropriate gear in the fixed cone gear assembly 60 on the power take-off shaft 54.

When a change in gear ratio is desired, the

in the fixed cone gear assembly 69. Figure 10 shows the low ratio gear change box cover 58, Figure 11 the medium ratio gear change box cover 59, and Figure 12 the high ratio gear change box cover 66. The low ratio cover 58 encloses the low ratio jack shaft drivenpinion 63 and the low.ratio jack shaft .driving pinion 66. Cover 59 in Figure 11 encloses the medium ratio jack shaft driven pinion 64 and the medium ratio jack shaft driving pinion 61. Cover 60 in Figure 12 encloses the high ratio jack shaft driven pinion 65 and the high ratio jack shaft driving pinion 68. Although I have illustrated but three different gear ratios, more may be included, without departing from the spirit of my invention, by merely increasing the number of gears in the fixed cone. gear assembly 69 and the number of All shafts are run on anti-friction bearings. All gears are keyed to their respective shafts and the driving and driven jack shaft pinions may be positioned with the aid of spacer bushings 56.

What I claim is:

1. In a machine for severing glass tubing: 9.

shaft projects;

andmeans for reciprocating said carriage and means for iocking said cutting member out of the path of the tubing.

2. In a machine for severing glass tubing: a and means for bodilydisplacing said 'cuttingmember in an arcuate path,transverse to-thelongitudinal axis of the saidtublng.

3. In a. machinejifor cuts-of tubing :01 dirfrom-the fixed drive housing; an'adjusting screw connecting said fixed housing and said adjustable housing; a drive sprocket projecting .i'rom the fixed drive housing and jecting from the adjustable housing; aand'an 'adjustable roller-carrying chain connected'to said drive sprocket and .said idler sprocket.

4. .In a machine for severing glass tubing: a

cutting member; means for bodily displacing said cutting member in an arcuate path, transverse to the longitudinal axis of the said tubing; a carriage on which said cutting memberis mounted;

longitudinal direction of the tubing being cut.

severing glass tubingz.

in'theza modes? .5 In apparatus !0rsevering glass tubing by means of imparting a stroke to a cutting member transverse to the .longitudinalaxis oi the 

